（《唐本草》）
【释名】盐绿、石绿（《纲目》）。
【集解】恭曰∶绿盐出焉耆。水中石下取之，状若扁青、空青，为眼药之要。今人以光
明盐、 砂、赤铜屑，酿之为块，绿色，以充之。
曰∶出波斯国，生石上，舶上将来，谓之石绿，装色久而不变。中国以铜、醋者，
堪入药，色亦不久。
时珍曰∶方家言波斯绿盐色青，阴雨中干而不湿者为真。又造盐绿法∶用熟铜器盛取浆
水一升，投青盐一两在内，浸七日取出，即绿色。以物刮末，入浆水再浸七日或二七取出。
此非真绿盐也。
【气味】咸、苦、辛，平，无毒。
【主治】目赤泪出，肤翳眵暗（《唐本》）。点目，明目消翳。疗小儿无辜疳气（李 ）。
【附方】新二。
胎赤眼痛∶盐绿一分，蜜半两。于蚌蛤壳内相和。每夜卧时浆水洗目，炙热点之，能断
根。（《圣济录》）
目暗赤涩多泪∶盐绿一钱，蕤仁（去皮）一钱。研热，入好酥一钱，研匀。每夜点一麻
子。（《圣惠方》）
（《拾遗》）
【集解】藏器曰∶生海西南雷、罗诸州山谷。似芒硝，末细，入口极冷。南人少有服者，
恐极冷入腹伤人，宜慎之。
【气味】咸，冷，无毒。
【主治】眼赤 烂风赤，细研水和点之。又水研服，去热烦痰满头痛，明目镇心。又主
蛇虺恶虫毒，药箭镞毒，疥癣痈肿瘰 ，并摩敷之，甚者水化服之。又解独自草箭毒（藏器）。
【附录】悬石
保升曰∶人若常服炼石者，至殁，冢中生悬石，若芒硝，其冷如雪，杀火毒。
(From *Tang Bencao*)
[Names] Yanlü (Salt Green), Shilü (Stone Green) (from *Bencao Gangmu*).
[Collection and Explanation] Su Gong stated: Lüyan (Green Salt) is produced in Yanqi. It is collected from under stones in water, resembling Bianqing (Blue Malachite) and Kongqing (Hollow Blue), and is a crucial medicine for eye diseases. Nowadays, people use Guangmingyan (Bright Salt), Sha (Sand/Mineral), and Chitongxue (Red Copper Filings), brewing them into blocks that are green in color to pass off as the genuine article.
Chen Cangqi stated: It originates from the Kingdom of Persia, grows on rocks, and is brought over by ships, called Shilü (Stone Green). As a pigment, it remains unchanged for a long time. In China, those made from copper and vinegar can be used as medicine, but their color does not last long.
Li Shizhen stated: Practitioners say that Persian Lüyan (Green Salt) with a bluish-green color, which dries without becoming damp during cloudy or rainy weather, is genuine. Another method to create Yanlü (Salt Green) is: take one sheng of Jiangshui (fermented grain wash) in a clean copper vessel, add one liang of Qingyan (Green Rock Salt), soak for seven days, then remove; it will turn green. Scrape it into powder, immerse it again in Jiangshui for seven days or fourteen days, then remove. This is not true Lüyan (Green Salt).
[Flavor and Properties] Salty, bitter, acrid; neutral in nature; non-toxic.
[Indications] Red eyes with tearing, skin nebulas, and dark eye discharge (from *Tang Bencao*). Applied to the eyes to brighten vision and eliminate nebulas. Treats infant Wugu Ganqi (Innocent Childhood Malnutrition/Gan Syndrome) (from Li Xun's works).
[Attached Prescriptions] Two new prescriptions.
Fetal Redness and Eye Pain: One fen of Yanlü (Salt Green) and half a liang of honey. Mix together inside a clam shell. Every night before sleep, wash the eyes with Jiangshui (fermented grain wash), heat gently, and apply. This can cure the root cause. (*Shengji Lu*)
Dim Vision, Redness, Dryness, and Excessive Tearing: One qian of Yanlü (Salt Green) and one qian of Ruiren (Buckthorn Seed, peeled). Grind until hot, add one qian of high-quality butter (Su), and grind evenly. Apply an amount the size of a sesame seed every night. (*Shenghui Fang*)
(From *Bencao Shiyi*)
[Collection and Explanation] Chen Cangqi stated: It is found in the valleys of Leizhou and Luozhou in the southwest of the sea. It resembles Mangxiao (Mirabilite), has fine powder, and feels extremely cold upon entry into the mouth. People in the south rarely consume it, fearing that the extreme cold may damage the abdomen when ingested; caution is advised.
[Flavor and Properties] Salty; cold in nature; non-toxic.
[Indications] For red and ulcerated eyes or wind-induced red eyes, grind finely, mix with water, and apply to the eyes. Also, grind with water and ingest internally to relieve heat, irritability, phlegm distension, chest fullness, and headache; it brightens the eyes and calms the heart spirit. It also treats venom from snakes, scorpions, and other evil insects, poison arrowheads, scabies, tinea, carbuncles, and scrofula; apply externally by rubbing and compressing. For severe cases, dissolve in water and ingest. It also detoxifies the poison of Duzijiao Cao (Solea Grass) arrow poison (Chen Cangqi).
[Appendix] Xuanshi (Hanging Stone)
Su Baosheng stated: If a person frequently consumes refined stones, after death, "Xuanshi" (Hanging Stones) will form in their grave. They resemble Mangxiao (Mirabilite), are as cold as snow, and can neutralize fire toxicity.